Title :
Noninvasive method for measuring flow from oscillometric data
Author :
Whitt, Michael D. ; Drzewiecki, Gary M.
Author_Institution :
Dept. of Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA
Abstract :
The derivative of a pressure waveform obtained from oscillometry has the characteristics of a flow waveform. The accuracy of the waveform varies with transmural pressure. Using an in vitro model, a flow sine wave was generated and measured via the pressure gradient method to verify the calibration of flow. Also, a Doppler flow transducer was employed allowing comparison with flow waveforms obtained from oscillometry in an in vivo study. The results suggest that flow measurement is calibrated when cuff pressure is such that arterial compliance is near maximum
Keywords :
Doppler measurement; blood flow measurement; blood pressure measurement; physiological models; pressure transducers; Doppler flow transducer; accuracy; arterial compliance; calibration; cuff pressure; flow measurement; flow sine wave; flow waveform; in vitro model; in vivo study; noninvasive method; oscillometric data; oscillometry; pressure gradient method; pressure waveform; transmural pressure; Arteries; Biomedical measurements; Blood pressure; Brachytherapy; Fluid flow measurement; In vitro; Pressure measurement; Testing; Transducers; Ultrasonic variables measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.415226
